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Electronic Principles

Electronic Principles
Holes are the minority carriers in which type of semiconductor?

Intrinsic
p-type
Extrinsic
n-type
None of these

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Electronic Principles
What is one important thing transistors do?

Regulate voltage
Emit light
None of these
Rectify line voltage
Amplify weak signals

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Electronic Principles
Doubling the operating voltage of a purely capacitive circuit:

multiplies the capacitive reactance by 7
cuts the capacitive reactance in half
doubles the amount of capacitive reactance
has no effect on the capacitive reactance
None of these

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Electronic Principles
The rise time of a pulse waveform is the time required for the voltage to rise:

from zero to its rms value
from 10% of the peak value to 70.7% of the peak value
from 10% of the peak value to 90% of the peak value
None of these
from zero to its peak value

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Electronic Principles
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?

60 Ohm
None of these
50 Ohm
10 Ohm
100 Ohm or more

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Electronic Principles
The emitter diode is usually

Forward-biased
Nonconducting
None of these
Reverse-biased
Operating in the breakdwon region

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